Improvement in dumping-scows



2 Sheets-Sheet 1.

M. P. WAL-SH. Dumping-Snow.

No. 213,854. Patented April'I, 1879.

NPETERS, PHTO-IJTHOGRAFHBI. WASHINGTON. 7 C.

2 Sheets-Sheet 2.

M. P. WALSH. Dumping-800W.

No. 213,854. Patented April 1, 1879.

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UNITED STATES PATENT FFICE.

MICHAEL P. WALSH, OF BROOKLYN, E. D., NEW YORK.

IMPROVEMENT IN DUMPING-SCOWS.

Specification forming part of Letters Patent No. 213,854, dated April 1,1879 application filed April 4, 1877.

To all whom it 'may concern.-

Be it known that I, MICHAEL P. WALSH, of Brooklyn, E. D., in the countyof Kings and State of New York, have invented an ImprovementinDumping-Scows, of which the following is a specification:

In Figure 1 of accompanying drawings the scow is represented sectionallyas partially tipped and in the act of turning over to dump the load; andFig. 2 is a plan view of said scow.

This scow is made to turn either side up, and the load of mud, ashes, orrefuse material is held upon the deck, and delivered at the proper timeby admitting water into compartments at one side of the vessel, to weighdown that side and cause the inversion of the scow.

The decks a and b are connected by the sides o d, to form a hollow floatof suitable size, and it is preferable to havethe ends tapering like thebow of a boat, as seen in Fig. 2. The sides o d extend above the deckssufficiently to retain the deck-load. There is a central longitudinalpartition, f, and horizontal partitions g and h, forming water-tightcompartments.

The scow is to be towed by aline to a steamboat or other vessel, andtaken to the place where the loadis to be dumped. Thisis effected asfollows: The space 7c has side inlets at t', covered with any suitablevalve, from which a line passes to the tow-boat. This line is pulledwhen the scow arrives at the place where the load is to be dumped, andby opening the valve the water is allowed to pass into the space k, andthis side of the vessel commences to sink, and the air passes out of kthrough one of the pipes m, and so soon as the scow tips sufficient-lyit rolls entirely over, delivering the load, and coming with the otherdeck upward.

The water runs out of the chamber k, be cause the heating-line of thescow when empty is at or near the horizontal partition h or g, accordingto which deck, a or b, is uppermost.

There are scnpper-holes and plugs at o 0, that free the vessel fromwater; for if there is any leakage it will run through the holes r andaccumulate at s, and then when the scow comes the other side up thisWater will be discharged by withdrawing the upper scupperplugs, o. Thevalve at t' is to be closed before the scow is again loaded.

Trunks or stationary pipes are introduced at t, with plugs orscrew-Stoppers, for inserting a pump into the chamber k to pump out anyleakage that may pass into the chamber lo while the scow is being oatedto its place; and other plug-holes should be provided at u, forinserting a pump to the main chamber of the float.

The air-pipes m, being bent and crossing alternately from top to bottom,prevent the water running in while in use, and insure a free air-outletas the scow rolls or tips over.

I claim as my invention- 1. The reversible scow with the chamber lcpartitioned off at one side, and a valve to admit water into the same,substantially as set forth.

2. The combination, with the scow and airchambers, of the air-pipes m,that cross from the upper to the lower parts of the vessel,substantially as set forth.

3. The combination, with a scow having the central partitions, f, of thehorizontal partitions g and h, that are placed at or near thefloating-lines of the scow when unloaded, substantially as set forth.

4. The combination, with a scow having a rounded or tapering end, ofair-chambers arranged Within the scow, and two correspond ing decks atthe upper and under sides, as set forth.

5. The method herein specified of actuating the reversible scow by avalve at one side and a rope extending to the tug-boat, to admit waterto cause the scow to ca-reen and turn bottom up, as set forth.

Signed by me this 2d day of April, A. D. 1877.

MICHAEL P. WALSH.

Witnesses:

GEO. T. PrNoKNEY, CHAs. H. SMITH.

